package com.cyx.exam.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * @author cyx
 * @create 2021-03-11 11:16
 */
@Configuration
public class LoginHandlerInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //登录成功之后，应该有用户的session;
        Object loginUser = request.getSession().getAttribute("loginUser");
        if(loginUser==null){
            request.setAttribute("msg","没有权限，请先登录");
            request.getRequestDispatcher("/").forward(request,response);
            return false;
        }else {
            return true;
        }
    }
}
